Encyclopedia of Planetary Landforms

2015 Edition
| Editors: Henrik Hargitai, Ákos Kereszturi

Dune System

Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-3134-3_602

Definition

Aeolian or subaqueous sand deposits that comprise hills of sand, which are formed under atmospheric or aqueous flows.

Category

A type of  sand deposit.

Synonyms

 Aeolian bedforms;  Aeolian sand systems;  Dune;  Dune field, dune system, erg (originally used in N. Africa), sand sea. For a detailed nomenclature survey, see Breed and Grow (1979).

Subtypes

Areal extent: Aeolian dunes are organized into contiguous areas (sand seas/ergs or dune fields) which are composed of individual or coalesced dunes or draas. Sand seas may be comprised of dune fields and areas devoid of dunes, also called sand sheets (Thomas 1989).

On Earth, the term sand sea/ erg is used for dune fields >100 km2 (Wilson 1973) or >125 km2 (Thomas 1989), or wind-transported sand deposits covering >20 % of the ground (Wilson 1973, p. 78).

Dune fields on Earth are those covering areas smaller than 100 km2 (Pye and Tsoar 1990).

Several workers use the Barlow ID method for dune field identification ( impact...

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  1. 1.Laboratorio di Telerilevamento e Planetologia, Dipartimento di Scienze Psicologiche, Umanistiche e del TerritorioUniversità degli Studi G. D’AnnunzioChietiItaly
  2. 2.NASA Ames Research Center/NPPMoffett FieldUSA